Cotton-seed linter.



H. E. SESSIONS.

COTTON SEED LINTBR.

APPLIGATION FILED JUNE 27, 1912.

1,077,435, Patented N0v.4,1913.

HUGH E. SESSIONS, OF COLUMBIA, SOUTH CAROLINA.

COTTON-SEED LINTER.

Specification of Letters Patent.

Application led June 27. i912.

Patented Nov. 41, 1913.

semi No. 706,250.

To all whom it may concern e it known that I, HUGH E. Sessions, acitizen of the United States, residing` at Columbia, county of Richland,and State of South Carolina, have invented certain new and usefulImprovements in Cotton-Seed Linters, of which the following is aspecification.

This invention consists in certain improvements on the cotton-seedlinter disclosed in my prior Patent No. 962,7 22, granted June 2S, 1910,and it has been my purpose by the novel features hereafter described tostill further improve the operation of the machine in separating thelint from trash and foreign matter.

The novel features o-f the invention will be apparent from the followingdescription taken in connection with the accompanying drawing.

In the drawing I have shown a section of a machine embodying the variousfeatures of my invention.

As set forth in my prior patent the purpose of the machine is to rem-ovelint from seed which have previously been ginned and to recover the lintso removed free from the trash motes and other foreign matter which maybe mixed with it as it is brushed down by the brush cylinder.

This means for removing the lint from the seed is embodied in a casing lhaving the upright corner posts 2 and 3 and the cross pieces 4, 5 and 6.In this casing a new cylinder 7 is mounted embodying a gang of sawspassing between the saw ribs S as will be clearly understood by thoseskilled in the art. A brush cylinder 9 is mounted by the sideof the sawcylinder having brush points engaging the teeth of the saw and adaptedto rotate at a higher rate of speed than the saw cylinder. The twocylinders rotate in the direction indicated by the arrows, and becauseof the higher rate of speed of the brush cylinder the cotton is brushedfrom the teeth of the saws down toward the floor or platform on whichthe casing l is mounted. Preferably the ends of the brush should usttouch the points of the saw teeth, the lint being drawn from the sawsprincipally by the draft created by the brush. The cotton seeds are fedto the apparatus through the opening l0 in any suitable way, and theamount fed to the saws is regulated by the feed mechanism 27. The floatll agit-ates the seed and assists in properly presenting them to thesaws. It will be understood that the lint is carried by the saw teethbetween the ribs 8 until it reaches the brush and that the seed passdown the ribs and out through the opening l2.

A flue 13 leads upwardly from the lower edge of the brush cylinder 9 anddischarges the lint upon a cylinder 14- covered with wire jcloth whichrevolves in the direction indicated by the arrow. The lint is depositedon the cylinder 14 in the form of a layer which may be removed in themanner shown in my Patent No. 962,7 22. It will be understood that thedraft which carries the lint up through the flue 13 is created by thebrush cylinderl 9 which rotates at high speed immediately above theentrance of that flue.

As set forth in my prior patent the arrangement of the mote board 17 atan angle of about 450 extending down to a point near the floor of thecasing whereby a large space is left when it and the brush cylinder 9brings about a very decided improvement in the separation of the lintfrom the trash. The lint is discharged `(ilownward by Jthe brushcylinder and under the influence of the gentle current created outthrough the flue 13, it floats first downwardly and then up and outthrough the flue, the heavy particles and trash falling to the floor ofthe casing` and practically all of the lint being recovered. I havefound that the use of an inclined rear wall 30 for the casing still further improves the separating action, that wall 30 extending across thecasing and at au angle from a point in front of and beneath the sawcylinder downwardly and inwardly to the floor. It serves to prevent anyinward draft of air at that point and seems to have a beneficial effectowing to its inclination in directing upwardly the air which is admittedbeneath the mote board 17, and by its inclined position it also .avoidsa sharp corner or pocket at the bottom of the casing in which the airwould be more or less dead and in which material will collect.

In addition to the rear wall 30 I have found that improved results areproduced by the use of a mote board having ribs or corrugations on itsupper surface extending sheet metal which may be galvanized sheet iron.and that metal is simply bent to the shape desired. The lower edge iscurved into a roll 2O which serves to strengthen it and. the lowerportion 2l is made with a flat smooth upper surface so as to furnish afree passage for the air. Ribs 22 having flat upper surfaces are formedby bending' or co1- rugating the metal and the upper surfaces of theseribs are preferably made about one inch in width. Between the ribs thereare depressions formed by a gradual concave portion, these concaveportions preferably being about three and one half inches wide. Theupper end of the mote board may be simply bent over the inner end of theflue 13, and screws may be passed through it into the flue to hold theboard in place. It will be seen, however, that the invention is notlimited to this fastening means and that the board may be hinged andadjustable as indicated in my prior patent. I End that the corrugationson the surface of the mote board have some elect on the current of airpassing up in clos-e contact with that board and that they tend toprevent metes and particles of trash from traveling up and into the fluecreating slight eddies in the air passing over them.

The separat-ing action of the machine is also improved by properregulating means for controlling the admission of air carried down intothe chamber by the brush cylinder and also proper regulation of thedischarge of air on the opposite side of the brush cylinder. I thereforemake use of an improved form of regulating means carried by the divisionboard above and between the saw cylinder and the brush cylinder. Thatregulating means includes a vertically movable board 32 which hasvertical slots in it through which the bolts 33 pass to secure the boardin proper position on the fixed support 34. At the lower end of theboard 32 there is a horizontal extension 35 which reaches out to a pointabove and close to a line of the bristles on the brush cylinder, and bya vertical adjustment of the board 32 the distance of the extension 35from the ends of the bristles is controlled and thus the passage of airdown with the bristles is regulated. This lateral extension makes iteasier to see just what adjustment is being secured than would be thecase with the board eX- tending straight down in between the twocylinders.

In order to regulate the discharge of air on. the opposite side of thebrush cylinder I malte use of an adjustable board which approaches theends of the bristles and cuts off the air, and the drawing shows onearrangement which I have used for this purpose. It includes theadjustable board 3G having slots in it through which the bolts 37 passfor holding it in adjusted position, the lower side next to said brushcylinder, a motel` board widely separated :from said brush cylinderextending inwardly and downwardly at an angle of approximatelyforty-live de grees from said flue to a point above the floor leaving aninlet for air beneath its edge, and g a rear wall for said chamber onthe side next to said saw cylinder extending inwardly and downwardly tothe floor of the chamber at an angle.

2. In a cotton seed linter, the combination .J

with a casing forming a substantially closed chamber, of a saw cylinder,a brush cylinder adapted to discharge lint downwardly from said sawcylinder into said chamber, a flue for the lint leading from said casingon the` side next to said brush cylinder, a mote board widely separatedfrom said brush cylinder extending inwardly and downwardly at an angleoi' approximately forty-five degrees from said flue to a point above thefloor leaving an inlet for air beneath its edge, and a rear wall forsaid chamber on the side neXt to said saw cylinder extending inwardlyand downwardly to the floor of the chamber at an angle and adjustablemeans for regu-1 lating the passage of air down between said brush andsaw cylinders into said chamber.

3. In a cotton seed linter, the combination with a casing forming asubstantially closed chamber, of a saw cylinder, a brush cylinder iadapted to discharge lint downwardly from said saw cylinder into saidchamber, a flue for the lint leading from said casing on the side nextto said brush cylinder, a mote board having horizontal ridges on itsupper surface widely separated from said brush cylinder extendinginwardly and downwardly at an angle of approximately fortytve degreesfrom said flue to a point above the floor leaving an inlet for airbeneath its edge and a rear wall for said chamber on the side next tosaid saw cylinder ext-ending inwardly and downwardly to the floor of thechamber at an angle.

4. In a device of the class described, the

combination with a saw cylinder, of a brush cylinder adapted todischarge lint downwardly, a mote board widely separated therefromarranged at an angle of about fortyfive degrees, and a casing forming anunobstructed chamber to receive the d0wnwardly directed lint soconstructed as to ad- Init air below said mote board but prevent sidedrafts up to the peripheral line of said saw cylinder, the said moteboard having transverse separated ribs on its upper surface.

5. In a device of the class described, the combination wit-h a sawcylinder, of a brush cylinder adapted to discharge lint downwardly, amote board widely separated therefrom arranged at an angle of aboutforty-five degrees, and a casing forming an unobstructed chamber toreceive the downwardly directed lint so constructed as to admit airbelow said mote board but prevent side drafts up to the peripheral lineof said saw cylinder, the said mote board having transverse separatedribs on its upper surface with concave depressions between them and aflat smooth surface at the lower edge.

6. In a device of the class described, the combination with a sawcylinder, of a brush cylinder, a mote board widely separated therefromarranged at an angle of about forty-five degrees, the said mote boardbeing formed of sheet metal corrugated to form ribs on its upper surfaceand having a smooth flat portion at the lower edge.

T. In a device of the class described, the combination with a sawcylinder, of a brush cylinder, a mote board widely separated therefromarranged at an angle of about forty-live degrees, the said mote boardbeing formed of sheet metal corrugated to form ribs on its upper surfacewith flat tops and concave depressions between them and the lowerportion being flat and terminating in a roll.

8. A sheet metal mote board having transverse corrugations.

9. A sheet metal mote board having transverse corrugations with flattops and concave depressions and one end of the board being fiatterminating in a roll.

10. In a device of the class described, the combination with a sawcylinder, of a brush cylinder mounted by the side of said saw cylinderand adapted to brush the lint downwardly from said saw cylinder, anadjustable division board above and between said cylinders, the saidboard having a lateral portion adapted to approach the ends of thebristles on the brush in accordance with the adjustment to regulate theadmission of air between the cylinders, and a mote board eX- tendingdownwardly beneath the brush cylinder but widely separated therefromupon the side opposite the saw cylinder.

l1. In a device of the class described, the combination with a sawcylinder, of a brush cylinder mounted by the side of said saw cylinderand adapted to brush the lint downwardly from said saw cylinder, and anadjustable division board above and between said cylinders having ahorizontal eXtension or edge extending over and close to the ends of thebristles on said brush whereby the vertical adjustments of the boardwill regulate the air carried down by the bristles.

In testimony whereof I aiiiX my signature in presence of two witnesses.

HUGH E. SESSIONS.

Witnesses DAVID KING,

J. F. GAINES.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. G.

